67240224 has 72 divisors (see below), whose sum is σ = 199547712. Its totient is φ = 21436800.

The previous prime is 67240223. The next prime is 67240279. The reversal of 67240224 is 42204276.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (67240223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1549 + ... + 11699.

It is an arithmetic number, because the mean of its divisors is an integer number (2771496).

Almost surely, 2^67240224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67240224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99773856).

67240224 is an abundant number, since it is smaller than the sum of its proper divisors (132307488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67240224 is a wasteful number, since it uses less digits than its factorization.

67240224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10190 (or 10179 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 67240224 is about 8200.0136585252. The cubic root of 67240224 is about 406.6396446556.

The spelling of 67240224 in words is "sixty-seven million, two hundred forty thousand, two hundred twenty-four".